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perf beauty: Introduce strarray__scnprintf_flags()

tip:perf/urgent tip-bot for Arnaldo Carvalho de Melo 1 participant 1 message Oct 31, 2018 perf events

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Commit-ID:  579e5ff629b17744f62473f314768de8b6f1e66c
Gitweb:     https://git.kernel.org/tip/579e5ff629b17744f62473f314768de8b6f1e66c
Author:     Arnaldo Carvalho de Melo <[email protected]>
AuthorDate: Thu, 25 Oct 2018 14:21:31 -0300
Committer:  Arnaldo Carvalho de Melo <[email protected]>
CommitDate: Tue, 30 Oct 2018 11:46:23 -0300

perf beauty: Introduce strarray__scnprintf_flags()

Generalizing pkey_alloc__scnprintf_access_rights(), so that we can use it with other flags-like arguments, such as mount's mountflags argument.

Cc Adrian Hunter <[email protected]>
Cc Benjamin Peterson <[email protected]>
Cc David Ahern <[email protected]>
Cc Jiri Olsa <[email protected]>
Cc Namhyung Kim <[email protected]>
Cc Wang Nan <[email protected]>
Link https://lkml.kernel.org/n/[email protected] open here
Signed-off-by Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/trace/beauty/beauty.h     |  1 +
 tools/perf/trace/beauty/pkey_alloc.c | 27 ++++++++++++++++-----------
 2 files changed, 17 insertions(+), 11 deletions(-)
tools/perf/trace/beauty/beauty.h +1 -0
index 2570152d3909..a1806c4f3ccd 100644
@@ -24,6 +24,7 @@ struct strarray {
 }
 
 size_t strarray__scnprintf(struct strarray *sa, char *bf, size_t size, const char *intfmt, int val);
+size_t strarray__scnprintf_flags(struct strarray *sa, char *bf, size_t size, unsigned long flags);
 
 struct trace;
 struct thread;
tools/perf/trace/beauty/pkey_alloc.c +16 -11
index d3e5188a9bef..1b8ed4cac815 100644
@@ -9,31 +9,28 @@
 #include <linux/kernel.h>
 #include <linux/log2.h>
 
-static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size)
+size_t strarray__scnprintf_flags(struct strarray *sa, char *bf, size_t size, unsigned long flags)
 {
 	int i, printed = 0;
 
-#include "trace/beauty/generated/pkey_alloc_access_rights_array.c"
-	static DEFINE_STRARRAY(pkey_alloc_access_rights);
-
-	if (access_rights == 0) {
-		const char *s = strarray__pkey_alloc_access_rights.entries[0];
+	if (flags == 0) {
+		const char *s = sa->entries[0];
 		if (s)
 			return scnprintf(bf, size, "%s", s);
 		return scnprintf(bf, size, "%d", 0);
 	}
 
-	for (i = 1; i < strarray__pkey_alloc_access_rights.nr_entries; ++i) {
-		int bit = 1 << (i - 1);
+	for (i = 1; i < sa->nr_entries; ++i) {
+		unsigned long bit = 1UL << (i - 1);
 
-		if (!(access_rights & bit))
+		if (!(flags & bit))
 			continue;
 
 		if (printed != 0)
 			printed += scnprintf(bf + printed, size - printed, "|");
 
-		if (strarray__pkey_alloc_access_rights.entries[i] != NULL)
-			printed += scnprintf(bf + printed, size - printed, "%s", strarray__pkey_alloc_access_rights.entries[i]);
+		if (sa->entries[i] != NULL)
+			printed += scnprintf(bf + printed, size - printed, "%s", sa->entries[i]);
 		else
 			printed += scnprintf(bf + printed, size - printed, "0x%#", bit);
 	}

@@ -41,6 +38,14 @@ static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, s
 	return printed;
 }
 
+static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size)
+{
+#include "trace/beauty/generated/pkey_alloc_access_rights_array.c"
+	static DEFINE_STRARRAY(pkey_alloc_access_rights);
+
+	return strarray__scnprintf_flags(&strarray__pkey_alloc_access_rights, bf, size, access_rights);
+}
+
 size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg)
 {
 	unsigned long cmd = arg->val;